The distribution system operator informs your energy supplier with a message about the installation of your digital meter. This message will be processed by your supplier, retroactively. It may take a while for the message from the distribution system operator to reach your supplier and it may also take a while for the supplier to process this message. 

Until this message is processed, you will not see an injection rate on your statement. However, by processing this message, this statement will be cancelled and a correct settlement, with injection rate, will be made, with retroactive effect.